Answer:

nark

AnswerCrossword Clue
NARKBalance sheet plus
NARKLaw enforcement officer
NARKLaw enforcement officer (var.)
NARKPolice informer
NARKAntidrug cop
NARKStoolie, to Brits
NARKStratford stoolie
NARKStoolie, in Stratford
NARKStoolie
NARKRat, in Rugby
NARKBobby's informant
NARKSussex stoolie
NARKLondon stoolie
NARKStoolie in Surrey
NARKBritish informant
NARKBritish stoolie
NARKStoolie, in Sussex
NARKFighter in the war on drugs (var.)
NARKStool pigeon
NARKAct the stool pigeon: Brit. slang.
NARKStool pigeon, in England.
NARKStool pigeon: Slang.
NARKBritish stool pigeon.
NARKStool pigeon in London.
NARKStool pigeon, at Scotland Yard.
NARKStool pigeon: Brit.
NARKInformer, in British slang.
NARKStool pigeon, in Britain.
NARKInformer: Slang.
NARKStool pigeon, in Soho.
NARKStoolie, in Southampton.
NARKBritish stool pigeon
NARKBritish informer
NARKStool pigeon, in England
NARKScotland Yard stoolie
NARKSoho stool pigeon
NARKBritish cop's informant
NARKD.E.A. agent: Var.
NARKInformer, informally
NARKDEA agent: var.